DOIs on Authorea are issued via Crossref with the following prefix 10.22541 and a unique suffix.
Once a DOI is issued to a piece of scholarly work, changes can no longer be made. On Authorea, however, we allow "DOI versioning" meaning articles can be updated and assigned new DOIs to allow for dynamic articles.
You can see how a DOI will look here: https://dx.doi.org/10.22541/au.148769949.92783646
Published on: 12 / 16 / 2017